Improvement in rotary printing-presses



s. H. BINGHAM. Rotary Printing-Presses.

-ADELPHIA, PENNSYLVANIA.

4 Specication forming part of Letters Patent No.

' January To all whom it may concern:

Beit knownthat I, SAMUEL H. BINS-EAM, of Philadelphia, in the county ofPhiladelphia and State of' Pennsylvania, have invented an ImprovedPrinting-Press, of which the following is a specification:

The drawing represents a vertical transverse section of my improvedprinting-press.

The object of lthis invention is to so construct a printing-press thatthe exactly opposite sides of a sheet, or the outer sides of two sheetscan be simultaneously printed 5 and `the invention consistswinconstructing a press with two printing-cylindegs, which are in line. l ywith each other and between which the sheet passes, so that eachcylinder will apply its imprint to the side of the sheet with which itI` Vis in contact, whlethe same is passing through l the press.

The invention is applicable to all such presses not containing type,whose cylinders y are either lithographie stones, or covered withprepared zinc or `other metallic impressionplates.

In the accompanying drawing, the letter A represents the upperprinting-cylinder, and B the lower,l They are hung parallel to eachother in a frame, C, of suitable kind, and are both, or either one ofthem, adjustable in their bearings to be brought sufficiently closetogether to apply the requisite degree of press- UNITED STATES ure tothe sheet passing between them. p

PATENT O FTFIGE. A'

SAMUEL H. BIN GHAM, OF PHILADELPHIA, PENNSYLVANIA, `ASSIGNOR TO1HIMSELF, EDWARD B. BIN GHAM, OF NEWARK, NEW JERSEY, GEO. W.

VAN ALLEN, OF NEW YORK CITY, AND WILLIAM N.

STONE, oF PHIL- IMPROVEMENT IN ROTARY PRINTING-PRESSES.

139,360, dated May 27, 1873 application filed i 30, 1873.

These rollers are represented as covered with printing-plates a a, butmay be made of stone or other material not containing type. Suitableinking-rollers b are used in connection with these cylinders for thepurpose of applying ink to `their surfaces, and also suitable damping orwiping rollers d. A sheet passing between the two rollers A B will, itis evident, be printed on both sides; and the two cylindersmay beprepared to produce different impressions on the opposite sides of thesheet, or also the saine impression, as may be desired. And whenever itis not desired to print two sides of one sheet, I may pass two sheetsbetween the two rollers A B, in which case the upper cylinder will printthe upper face of the upper sheet, `and the lower cylinder the lowerface of the lower sheet.

(Naim.`

The combination with each other of two lithographie orchemically-prepared printingcylinders A B, which are so arranged in oneframe as to constitute pressure-cylinders for each other, for printingwith their smooth and unengraved sufaces different or likelmatter uponopposite sides of. one or more sheets, substantially as specified.

S. H. BINGHAM. Witnesses: l

D. MIsELL, A. V. BRIEsEN.

